Static Equipment - Valve 2/2

What type of valve cannot see the stem because it is covered by the bonnet?

• Swing Check Valve

• Quick Opening Valve

• Non-Rising Stem (IS)

• Rising Stem (OS&Y)

Which type of valve rotates 90 degrees to open and close?

• Butterfly Valve

• Ball Valve

• Globe Valve

• Gate Valve

What type of valve allows only one direction of flow and is not suitable to install vertically?

• Relief Valve

• Spring Check Valve

• Safety Valve

• Swing Check Valve

Which type of valve is primarily used for liquid service and opens in proportion to the pressure increase over the opening pressure?

• Balanced Or Bellow

• Safety Relief Valve

• Safety Valve

• Relief Valve

What type of valve is characterized by rapid opening or pop action and is normally used for steam or air?

• Safety Relief Valve

• Safety Valve

• Balanced Or Bellow

• Relief Valve

Which type of valve is used primarily for both services (liquid and steam/air) and has the bonnet vented to the discharge side of the valve?

• Relief Valve

• Safety Valve

• Balanced Or Bellow

• Safety Relief Valve

What is a common issue in valve maintenance related to abnormal noise?

• From vibrated pipelines

• From loosened bolting

• From the valve itself

• From gland area

What is a recommended maintenance activity for manual valves related to packing replacement?

• Cut the gland packing 90 degree incline

• Select improper tool when removing gland packing

• Replace every periodic inspection

• Replace every 2 to 3 years

What should be done before disassembling a valve from the pipeline during maintenance activities?

• Apply lubricant and leave for a while

• Remove rust and soil

• Prepare new parts such as gland packing and gaskets

• Clean using water, steam, acid or solvent

What should be done after reassembling a valve during packing replacement activities?

• Tighten until leakage stops

• Fully open and close for several times

• Check using tube inspector & flashlight

• Load gland packing to full depth of the packing chamber